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chpasswd
Langue: en
Version: 07/30/2006 (fedora - 16/08/07)
Section: 8 (Commandes administrateur)
NAME
chpasswd - update passwords in batch modeSYNOPSIS
- chpasswd [options]
DESCRIPTION
chpasswd
- reads a list of user name and password pairs from standard input and uses this information to update a group of existing users. Each line is of the format:
user_name:password
By default the supplied password must be in clear-text. Default encryption algorithm is DES, but this setting can be changed in /etc/login.defs. Red Hat uses MD5 to encrypt passwords by default. Also the password age will be updated, if present.
This command is intended to be used in a large system environment where many accounts are created at a single time.
OPTIONS
The options which apply to the chpasswd command are:
- -e, --encrypted
- Supplied passwords are in encrypted form.
- -h, --help
- Display help message and exit.
- -m, --md5
- Use MD5 encryption instead of DES when the supplied passwords are not encrypted.
CAVEATS
Remember to set permissions or umask to prevent readability of unencrypted files by other users.
SEE ALSO
passwd(1), newusers(8), useradd(8).
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